InChI=1/C17H14O/c18-16-10-7-12-6-8-14-13-4-2-1-3-11(13)5-9-15(14)17(12)16/h1-4,6,8H,5,7,9-10H gona-1,3,5(10),8,11,13-hexaen-15-one